---
title: MAXIMUM_ATOMIC_BOUNDARY_SIZE
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.12+]
path: iokit/scsicmd_inquiry_pageb0_data/1792050-maximum_atomic_boundary_size
---

# MAXIMUM_ATOMIC_BOUNDARY_SIZE

## Declaration

```occ
UInt32 MAXIMUM_ATOMIC_BOUNDARY_SIZE;
```